my solution to lab5

lab/user/testkbd.c

@@ -0,0 +1,30 @@
+
+#include <inc/lib.h>
+
+void
+umain(int argc, char **argv)
+{
+	int i, r;
+
+	// Spin for a bit to let the console quiet
+	for (i = 0; i < 10; ++i)
+		sys_yield();
+
+	close(0);
+	if ((r = opencons()) < 0)
+		panic("opencons: %e", r);
+	if (r != 0)
+		panic("first opencons used fd %d", r);
+	if ((r = dup(0, 1)) < 0)
+		panic("dup: %e", r);
+
+	for(;;){
+		char *buf;
+
+		buf = readline("Type a line: ");
+		if (buf != NULL)
+			fprintf(1, "%s\n", buf);
+		else
+			fprintf(1, "(end of file received)\n");
+	}
+}